(theme music)

(bright music)

[Female Narrator] Mr. Know-it-All.

(cloud puffs) (man coughs)

[Narrator] I'm about to travel to Beijing on business.

May I wear a dust mask to guard against the pollution?

(laser zaps) It's true Beijing is polluted.

(people coughing) You're wondering if a mask

will offend your host and it won't.

Many natives have adopted this practice too.

Just don't delude yourself into thinking

a skimpy mask of the sort favored by many Chinese urbanites

will do much good.

(slow electronic music) Cheap surgical type masks

make you look awesome sure, but they don't filter

many harmful particles.

A local anti-pollution organization recommends

a higher quality mask with replaceable filters

made of charcoal.

A substance who's manufacturer ironically

contributes to oops!

Air pollution!

Not recommended by any means is trying to enliven

your painfully dreary mask with drawings done in

(electric guitar playing) permanent marker.

(theme music)

I'm Mr. Know-it-All which means I already know

whether or not you are interested in clicking on

the subscribe button.

You are.